This is my first UOA and I made several errors. I had the UOA done by AAA Diagnostic under the Oil Scan program. They take the sample and ship it to Herguth Labs for $25. H Labs will give only a limited UOA under this program. There is no TBN or Viscosity.
Engine - 3.5L Isuzu
Vehicle - 99 Acura SLX
RL in at 65,180 Miles
changed at 73,200 Miles
Vehicle use includes four wheeling in Moab,Ut. Much desert running in Nevada and Arizona. High speed long distance runs on highway. Some around town use in CA. Oil was used for April, May, June, July and August in the SW USA and central CA.
Crankcase Oil was 4 qts RL 10-30 and 1 qt RL 20-50. One makeup qt of RL 5-40? was added as needed.
Metals
Iron ppm - 7
Aluminum ppm - 2
Chromium ppm - 2
Copper ppm - 10
Lead ppm - 2
Tin ppm - 2
Nickel ppm - Silver ppm - Silicon ppm - 9
Sodium ppm - 18
Boron ppm - Zinc ppm - 1397
Phosphorus ppm - 1311
Calcium ppm - 2842
Magnesium ppm - 13
Barium ppm - Molybdenum ppm - 605
Potassium ppm - 16
FTIR
Oxidation Abs/cm - ** >100
Water FTIR % Vol - Nitration Abs/cm - **31
Fuel % Vol - Glycol % Vol
I called the lab at no charge and was given an interpretation. The interpretation was confusing to me. It turns out that the Oxidation and Nitration numbers were invalid because of the synthetic base stock. I asked about TBN and viscosity but was told that I can't have results under the oil scan program. The lab guy said the oil could have been used for many more thousands of miles.
I should have taken the sample myself and used the site supporters/interpreters. Herguth is probably OK for a more experienced person. Service was fast.
Engine - 3.5L Isuzu
Vehicle - 99 Acura SLX
RL in at 65,180 Miles
changed at 73,200 Miles
Vehicle use includes four wheeling in Moab,Ut. Much desert running in Nevada and Arizona. High speed long distance runs on highway. Some around town use in CA. Oil was used for April, May, June, July and August in the SW USA and central CA.
Crankcase Oil was 4 qts RL 10-30 and 1 qt RL 20-50. One makeup qt of RL 5-40? was added as needed.
Metals
Iron ppm - 7
Aluminum ppm - 2
Chromium ppm - 2
Copper ppm - 10
Lead ppm - 2
Tin ppm - 2
Nickel ppm - Silver ppm - Silicon ppm - 9
Sodium ppm - 18
Boron ppm - Zinc ppm - 1397
Phosphorus ppm - 1311
Calcium ppm - 2842
Magnesium ppm - 13
Barium ppm - Molybdenum ppm - 605
Potassium ppm - 16
FTIR
Oxidation Abs/cm - ** >100
Water FTIR % Vol - Nitration Abs/cm - **31
Fuel % Vol - Glycol % Vol
I called the lab at no charge and was given an interpretation. The interpretation was confusing to me. It turns out that the Oxidation and Nitration numbers were invalid because of the synthetic base stock. I asked about TBN and viscosity but was told that I can't have results under the oil scan program. The lab guy said the oil could have been used for many more thousands of miles.
I should have taken the sample myself and used the site supporters/interpreters. Herguth is probably OK for a more experienced person. Service was fast.